[Openmcl-devel] Slow response times from SLIME

[R. Matthew Emerson]

On Mar 30, 2013, at 10:18 AM, Willem Rein Oudshoorn <woudshoo at xs4all.nl> wrote:

> In slime compilation of a form can sometimes take up to 30 seconds.
> Or completation from slime on a symbol can take a similar amount of
> time.
> 
> It is not always the case, but often enough to be really annoying.

I was going to suggest putting (setq font-lock-verbose nil) in your .emacs (which has helped symptoms like this in the past), but I think the issue is something else.  See below.

> This happens not on a freshly started image, but an image I 
> have been playing with for a while.
> 
> The image uses the objc bridge and I create and delete a lot
> of NSWindows containing an NSOpenGLView.  
> (I create and delete because I am playing with cl-opengl)
> 
> Also I redefine obj methods very regularly.  
> 
> Oh, BTW, I am using:
> CCL: Version 1.8 (15416M (X8664)
> OSX: 10.8.3

My guess is that you may be running into the 10.8 mach_port_allocate_name() lossage.  (It's a long, horrible story.)  See http://trac.clozure.com/ccl/ticket/1005.

Please upgrade to the CCL 1.9 release, where we avoid direct use of the Mach exception handling interface.